Mine-car brake.



L). E. MORGAN.

MINE CAR BRAKE.

APPucATmN FILED JUNE24. 1915 l lfi fil I Patentedffiept, 21, 191

CEMOZ a]? State of. Oklahoma,

new and useful Improvements in Mine-Car CLYDE E. MGRGAN, OF HOLDENVJLLE, 'GKLAHGWGCA mun-one Beans meson.

Specification of letters Patent.

Patented Sept, relic.

Application filed June 24:, 1915. Serial IEO. 38,037.

have invented certain Brakes, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved mine car brake and has for its primary ob ject to provide a simple and effective hand operated brake for stopping the car upon an inclined section of the track. I

The invention has for a more particular ob ect to provide a brake for mine cars which are pulled by cables, whereby, in the e ent that the cables should break when the car is being pulled up an incline, the brakes will be automatically applied'to stop the descent of the car and thus obviate possibility of injury or damage, which would otherwise result from its release.

It isan additional object of the invention to provide a brake of the above type embodying ratchet disks secured upon the spaced car wheels and pivotally mounted brake dogs normally and yieldingly held in engagement therewith, and manually operable means for simultaneously throwing the (logs to an inoperative position.

With the above and other objects in view, my invention consists in the novel features of construction, combination, and arrangement of parts to be hereinafter more fully described, claimed, and illustrated in the 210 companying drawing, in which,

Figure l is a side elevation of a mine car equipped with my improved brake; Fig. 2 is an enlarged elevation of one of the brake devices, the brake dog being shown in an elevated inoperative position in dotted lines; and Fig. 3 is a section taken on the line 33 of Fig. 2.

Referring in detail to the drawing, 5 designates the body of the car which is mounted at its opposite ends upon the usual trucks having axles 6, upon the ends of which the wheels 7 are revolubly mounted to travel upon the track, indicated at 8. .Upon the inner face of each of the wheels 7 on one side of the car, a ring or annulus 9 is securely riveted, bolted, or otherwise fixed in concentric relation to the wheel axle. This ring is provided upon its outer peripheral face With the ratchet teeth 10. To the side wall of the its free end.

car body 5, immediately above each wheel 7, a plate 11 1S securely bolted, this plate as a substantially semi-circular rib or projection 12 formed upon its face, the lower edge of which provides a horizontal shoulder 13. This curved shoulder extends in concentric relation to a stud l4, integrally formed upon the face plate in. spaced relatron to the said shoulder. The brake dog 15 tapers longitudinally from its larger and and is loosely engaged upon the stud 14:.

.The free end of this dog has its end face properly beveled or inclined for contact with the end faces of the ratchet teeth of the nn 9. p w l. pon the side w ll of the car 5, above each of the plates 11, a bell crank lever 16 is fulcrumed. ne arm of this lever extends horizontally and is connected by a rod 17 to a pin 18 which extends loosely through an opening provid d in. the dog adjacent to coil spring 19 is engaged upon said pin and bears at one oi its ends against the dog 15. This spring is adapted to yieldingly hold the free end of the dog in contact with the ratchet teeth 10 on the ring 9. The other arms of the bell crank le vers 18, which are vertically disposed, are connected by a rod 20, and tothe said vertical arm of one hell crank lever, an operating bar 21 is also pivotally connected at one of its ends. This bar extends through a suitable guide loop 22 fixed upon the wall of the car, and with said loop a lug 23, formed upon the lower edge of the operating bar, is adapted to be engaged. To the Wall of the car a pin 24: is lined with which the laterally extending arm of the bell cranklevers 16 is adapted to engage, whereby the downward movement of said arm is limited.

In the operation of the device, assuming that the brake dogs are in engagement with the ratchets 9, as shown in Fig. 2, when the car is being pulled bythe cables up an incline, it will be seen that, if the cables should break and the car should start to descend the inclined track, the dogs 15, engaging the oath of the respective ratchcts, will effectively prevent rotation of the car wheels, thus stopping the descent of the car, so that no damage or injury will. be done at the lower end of the inclined track. The spring 19 acting upon the brake dog will permit of the rotation of the car Wheel in one direction so that the car may be readily pulled up the inclined track. When the car is traveling upon a straight stretch of track and the, brake is not necessary, the dogs 15 may be entirely disengaged from the ratchets by the operator pulling upon the rod 21, and

engaging the lug 23 thereof w1th the keeper member 22, as will be readily understood.

From the foregoing description, taken in connection with the accompanying drawing, the construction. manner of operation and several advantages of the invention will be clearly understood. It will be seen that I have provided a simple and effectiv brake which can be instantly applied when necessary to check the speed of the car. The brake device may, if desired, be provided for each of the car wheels, and it will also be apparent that the invention may be applied to vehicles other than mine cars, by resorting to such necessary mechanical expedients as are requisite in the adaptation of the device to a particular use. Owing to the very few parts involved in the construction of the device, it will also be seen that the same is very strong and durable in practical use and may be manufactured at small cost.

\Vhile I have shown and described the preferred construction and arrangement of the several parts employed, it is. manifest that the invention is susceptible of considerable modification therein, red I, therefore, reserve the privilege of res-arcing to all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my inven-- tion, What I desire to claim and secure by Letters Patent is 1. The combination with a vehicle Wheel, of a brake ring fixed thereto, a brake dog pivotally mountedat oneend, a pin loosely engaged in. the free end of said dog, operating means connected to said pin to raise or lower the free end of the dog with respect to the brake ring, and a spring arranged upon said pin bearing upon the dog to yieldingly hold the same in braking engagement with the ring.

2. The combination with a vehicle wheel, of a brake ring fixed upon one face thereof provided with ratchet teeth, a brake dog pivotally mounted at one of its ends, a bell crank lever, an operating rod connected to one arm of said lever, a pin loosely engaged in the free end of the dog, a connecting rod betweensaid pin and the other arm of the bell crank lever to raise or lower the free end of the dog with respect to the brake rin and a coil sarin a'rran ed u on said pin and bearing upon the dog to yieldingly hold the free end thereof in braking engagement with the ratchet teeth on said ring.

3. The combination with the spaced vehicle wheels, of a brake ring fixed to the outer face of each wheel, brake dogs pivotally mounted at one of their ends, and means for raising and lowering the dogs including bell crank levers, a pin loosely mounted in the free end'of each dog, con necting rods between the pins andone -arm of the respective levers, a rod connecting the other arms of said levers, springs on'said pins to yieldin'gly hold the free ends of the dogs in engagementwith the brake rings,

an operating bar connected to the latter arm of one ,bell crank lever adapted to actuate said levers to simultaneously raise or lower the free ends of the brake dogs, and means for retaining the operating bar in one position to hold the dogs out of engagement with the brake rings.

In testimony WhereofI hereunto aflix my signature in the presence of two Witnesses.

CLYDE E. MORGAN.

Witnesses:

G. P. LINN, GLENN W. KIVETT'. 

